How to Connect to Slack

I'm trying to setup the Slack connector. It says "Apologies, but you are not authorized to install Microsoft Power Apps + Flow. If you’d like, you can message one of your admins and ask them to install this app." When I go to the Slack apps directory there is no app called "Microsoft Power Apps + Flow" that I can request to be added. Is there any guidance I can pass on to the Slack workspace administrator to follow to enable this app?

I'm trying to setup the Slack connector. It says "Apologies, but you are not authorized to install Microsoft Power Apps + Flow. If you’d like, you can message one of your admins and ask them to install this app." When I go to the Slack apps directory there is no app called "Microsoft Power Apps + Flow" that I can request to be added. Is there any guidance I can pass on to the Slack workspace administrator to follow to enable this app?